摘要
节点定位是传感网络最基本的技术之一,对此提出一种基于移动信标的网格扫描定位算法(Mobile Beacon Grid-Scan,MBGS)。该算法在网格扫描定位算法基础上,利用一个移动信标巡航整个传感区域,产生大量的虚拟信标,提高网络信标覆盖率,然后普通节点利用这些信标信息减小其可能区域(Estimative Rectangle,ER),并把新可能区域网格坐标质心作为其最新估计坐标。仿真结果表明,与Bounding Box、质心定位算法以及传统的网格扫描定位算法相比,MBGS定位方法的定位精度更高,算法性能更加稳定。
Localization is one of the key technologies in wireless sensor networks.A Beacon-Based Grid-Scan Localization Algorithm (MBGS) is proposed in this paper. Based on traditional Grid-Scan localization method, the algorithm introduces a mobile beacon to provide lots of virtual beacons while traversing the network and reduces the estimative rectangle (ER) of normal nodes. MBGS regards the center of the new ER as the estimated location of the normal nodes.Simulation results show that the proposed algorithm have better locating performance in positioning accuracy and have more stable performance than the Bounding Box method, centroid method and traditional Grid-Scan method.
出处
《无线电通信技术》
2014年第2期4-6,59,共4页
Radio Communications Technology
基金
国家自然科学基金项目(60902097)
浙江省自然科学基金项目(LY12F02013)
浙江省科技厅重大科技专项重点工业项目(2011C11042)
宁波市自然科学基金项目(2012A610013
2012A610014)
宁波大学研究生重点课程建设项目(zdkc2012004)
关键词
无线传感器网络
网格扫描
定位
移动信标
wireless sensor network
Grid-Scan
localization
mobile beacon